I dont understand plz say it more clearly
The correct answer Having a shoreline makes shipment by sea possible, which is less expensive than over land
North African and Middle Eastern countries can't join the EU since they're not from Europe, and regarding security, it's all the same now since it's not the middle ages any more.
Mathematics and architecture are related, since, as with other arts, architects use mathematics for several reasons. Apart from the mathematics needed when engineering buildings, architects use geometry: to define the spatial form of a building; from the Pythagoreans of the sixth century BC onwards, to create forms considered harmonious, and thus to lay out buildings and their surroundings according to mathematical, aesthetic and sometimes religious principles; to decorate buildings with mathematical objects such as tessellations; and to meet environmental goals, such as to minimise wind speeds around the bases of tall buildings.